Metal RC Car parts, easy to upgrade Equipped with a micro-servo, can choose 2-speed mode Smooth transmission system for 1/10 RC Crawler Prefixal and shiftable gearbox design, is convenient to mount Wrangler body The rudder amount of the micro-servo should be adjusted to the minimum at the first use, and then adjusted to the appropriate vaule. Please shift transmission at low speed to prevent damage. Two Transmission : Using a 3-channel transmitter and a micro-servo, you have control on demand. Shiftable transmission can be configured in one of two ways. Set it up for 2-speed using the high and low gears. Gear Ratio of Gearbox: 1:8 (low gears) 1:4.8 (high gears) Gear Ratio of Transfer Case: 1:1 Motor Gear: 0.7M 15T colour: titanium color Material: metal Package Contents: 1 x Prefixal Gearbox with Servo 1 x Transfer Case 1 x Drive Shaft 1 x Motor Gear 1 x Mounting Accessories Set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.